CVE-2019-13533
CVE-2019-13533 is a high-severity vulnerability in Omron Plc Cj Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-294.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-294
- Affected product: Omron Plc Cj Firmware
- Published:
- Last modified:
Description
In Omron PLC CJ series, all versions, and Omron PLC CS series, all versions, an attacker could monitor traffic between the PLC and the controller and replay requests that could result in the opening and closing of industrial valves.
Frequently asked questions
- What is CVE-2019-13533?
- In Omron PLC CJ series, all versions, and Omron PLC CS series, all versions, an attacker could monitor traffic between the PLC and the controller and replay requests that could result in the opening and closing of industrial valves.
- How severe is CVE-2019-13533?
- CVE-2019-13533 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
- Is CVE-2019-13533 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-13533?
- CVE-2019-13533 primarily affects Omron Plc Cj Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2019-13533?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2019-13533 published?
- CVE-2019-13533 was published on 2019-12-16 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:omron:plc_cj_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:omron:plc_cs_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Omron Plc Cj Firmware
- CVE-2019-18269 — Critical (CVSS 9.8): Omron’s CS and CJ series PLCs have an unrestricted externally accessible lock vulnerability.
- CVE-2019-18261 — Critical (CVSS 9.8): In Omron PLC CS series, all versions, Omron PLC CJ series, all versions, and Omron PLC NJ series, all versions, the…
- CVE-2019-18259 — Critical (CVSS 9.8): In Omron PLC CJ series, all versions and Omron PLC CS series, all versions, an attacker could spoof arbitrary messages…
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